Bumblebee Hummingbird
Selasphorus heloisa
The bumblebee hummingbird is 5.9 to 7.5 cm (2.3 to 3.0 in) long and weighs 2 to 2.7 g (0.071 to 0.095 oz); it is one of the smallest hummingbirds. Both sexes of both subspecies have a short, straight, blackish bill and a small white spot behind the eye. Males of the nominate subspecies have metallic bronze green to golden bronze upperparts. Their gorget is metallic magenta purple to bluish purple at its edges, and its longer hindward feathers flare out and back. The flanks are light reddish cinnamon with a bronze wash. The rest of the underparts are dull white to grayish white.
ID text from Wikipedia, CC BY-SA 4.0
Calliope Hummingbird
Selasphorus calliope
The calliope is the smallest breeding bird found in Canada and the United States. An adult calliope hummingbird can measure 7–10 cm (2.8–3.9 in) in length, span 11 cm (4.3 in) across the wings and weigh 2 to 3 g (0.071 to 0.106 oz). Calliope hummingbirds have glossy green on the back and crown with white underparts. The adult male has wine-red streaks on the gorget, green flanks, and a dark tail. When an adult male is competing for territory or females, the dark red feathers of its gorget distend outwards to create a more distinct appearance.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Bumblebee Hummingbird and Calliope Hummingbird.